Comparative Vector Analysis of Astigmatic Changes After Small-incision Lenticule Extraction versus Femtosecond Laser In -situ Keratomileusis.

IF 1.4 Q3 OPHTHALMOLOGY

Journal of Ophthalmic & Vision Research Pub Date : 2026-07-15 eCollection Date: 2026-01-01 DOI:10.18502/jovr.v21.18010

Mai Hong Phan, Luong Minh Huynh, Say Kiang Foo

{"title":"Comparative Vector Analysis of Astigmatic Changes After Small-incision Lenticule Extraction versus Femtosecond Laser In -situ Keratomileusis.","authors":"Mai Hong Phan, Luong Minh Huynh, Say Kiang Foo","doi":"10.18502/jovr.v21.18010","DOIUrl":null,"url":null,"abstract":"Purpose: To compare thevisual outcomes of small-incision lenticule extraction (SMILE) versus femtosecond laser in-situ keratomileusis (FS-LASIK) in eyes with myopia and high astigmatism.Methods: This retrospective study was conducted at a tertiary eye hospital between January 2021 and December 2022. Data were collected from individuals with myopia up to <math><mo>-</mo></math> 10.00 diopters (D) and cylinder <math><mo>≥</mo></math> 2.50 D who underwent SMILE (VisuMax 500) or FS-LASIK (MEL 90) and completed a 3-month postoperative follow-up.Results: A total of 170 eyes of 123 patients were included: 83 eyes (60 patients) underwent SMILE, and 87 eyes (63 patients) underwent FS-LASIK. The preoperative cylindrical refractive error was <math><mo>-</mo></math> 3.01 <math><mo>±</mo></math> 0.61 D in the SMILE group and <math><mo>-</mo></math> 3.09 <math><mo>±</mo></math> 0.66 D in the FS-LASIK group. At 3 months, there was no statistically significant difference in uncorrected visual acuity (UCVA) or manifest refraction spherical equivalent (SEQ) between the two groups (P = 0.26 and P = 0.88, respectively). In the SMILE group, 90.4% of eyes achieved an uncorrected distance visual acuity (UDVA) of 20/20 or better compared to 98.77% with a preoperative corrected distance visual acuity (CDVA) of 20/20 or better. In the FS-LASIK group, 80.46% of eyes achieved a UDVA of 20/20 or better compared to 94.25% with a preoperative CDVA of 20/20 or better. Moreover, 95.1% of eyes in the SMILE group and 94.3% in the FS-LASIK group were within <math><mo>±</mo></math> 0.50 D. Vector analysis showed comparable results between the two groups in terms of target-induced astigmatism (P = 0.559), difference vector (P = 0.155), index of success (P = 0.091), and angle of error (P = 0.89). The surgically induced astigmatism and correction index were significantly lower in the SMILE group (P < 0.01), whereas the absolute magnitude of error was higher in the SMILE group (P = 0.02).Conclusion: SMILE and FS-LASIK have comparable efficacy, predictability, and safety in correcting myopia associated with high astigmatism ( <math><mo>≥</mo></math> 2.50 D).","PeriodicalId":16586,"journal":{"name":"Journal of Ophthalmic & Vision Research","volume":"21 ","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13430490/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Ophthalmic & Vision Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18502/jovr.v21.18010","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/1/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"OPHTHALMOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Purpose: To compare thevisual outcomes of small-incision lenticule extraction (SMILE) versus femtosecond laser in-situ keratomileusis (FS-LASIK) in eyes with myopia and high astigmatism.

Methods: This retrospective study was conducted at a tertiary eye hospital between January 2021 and December 2022. Data were collected from individuals with myopia up to $-$ 10.00 diopters (D) and cylinder $\geq$ 2.50 D who underwent SMILE (VisuMax 500) or FS-LASIK (MEL 90) and completed a 3-month postoperative follow-up.

Results: A total of 170 eyes of 123 patients were included: 83 eyes (60 patients) underwent SMILE, and 87 eyes (63 patients) underwent FS-LASIK. The preoperative cylindrical refractive error was $-$ 3.01 $\pm$ 0.61 D in the SMILE group and $-$ 3.09 $\pm$ 0.66 D in the FS-LASIK group. At 3 months, there was no statistically significant difference in uncorrected visual acuity (UCVA) or manifest refraction spherical equivalent (SEQ) between the two groups (P = 0.26 and P = 0.88, respectively). In the SMILE group, 90.4% of eyes achieved an uncorrected distance visual acuity (UDVA) of 20/20 or better compared to 98.77% with a preoperative corrected distance visual acuity (CDVA) of 20/20 or better. In the FS-LASIK group, 80.46% of eyes achieved a UDVA of 20/20 or better compared to 94.25% with a preoperative CDVA of 20/20 or better. Moreover, 95.1% of eyes in the SMILE group and 94.3% in the FS-LASIK group were within $\pm$ 0.50 D. Vector analysis showed comparable results between the two groups in terms of target-induced astigmatism (P = 0.559), difference vector (P = 0.155), index of success (P = 0.091), and angle of error (P = 0.89). The surgically induced astigmatism and correction index were significantly lower in the SMILE group (P < 0.01), whereas the absolute magnitude of error was higher in the SMILE group (P = 0.02).

Conclusion: SMILE and FS-LASIK have comparable efficacy, predictability, and safety in correcting myopia associated with high astigmatism ( $\geq$ 2.50 D).

查看原文本刊更多论文

小切口角膜晶状体摘除术与飞秒激光原位角膜移植术后散光变化的比较矢量分析。

目的：比较小切口晶状体摘出术（SMILE）与飞秒激光原位角膜磨磨术（FS-LASIK）治疗近视和高度散光患者的视力效果。方法：本回顾性研究于2021年1月至2022年12月在一家三级眼科医院进行。数据收集自屈光度达- 10.00 (D)、视柱≥2.50 D的近视患者，他们接受了SMILE （VisuMax 500）或FS-LASIK （MEL 90）手术，并完成了术后3个月的随访。结果：共纳入123例患者170眼，其中SMILE手术83眼（60例），FS-LASIK手术87眼（63例）。SMILE组术前柱形屈光差为- 3.01±0.61 D， FS-LASIK组术前柱形屈光差为- 3.09±0.66 D。3个月时，两组未矫正视力（UCVA）和明显折射球当量（SEQ）比较，差异均无统计学意义（P = 0.26和P = 0.88）。在SMILE组中，90.4%的眼睛未矫正距离视力（UDVA）达到20/20或更好，而术前矫正距离视力（CDVA）达到20/20或更好的眼睛为98.77%。在FS-LASIK组中，80.46%的眼睛UDVA达到20/20或更好，而术前CDVA为20/20或更好的为94.25%。此外，SMILE组95.1%的眼睛和FS-LASIK组94.3%的眼睛在±0.50 d范围内，矢量分析显示，两组在靶致散光（P = 0.559）、差矢量（P = 0.155）、成功指数（P = 0.091）和误差角（P = 0.89）方面具有可比性。SMILE组手术引起的散光和矫正指数明显低于对照组（P < 0.01），绝对误差明显高于对照组（P = 0.02）。结论：SMILE和FS-LASIK在矫正高度散光相关近视（≥2.50 D）方面具有相当的疗效、可预测性和安全性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊